Little "void" circle under back coverSupport

Just curious. I happened to notice today when I had the back cover off my Magic that there is a small circle, like a little button or knob, at the bottom right of the phone that says VOID on it in white text.

My phone is fine, it has taken no damage, and has not been wet. What is this little void circle? Anyone know?

I would assume so. In order to remove that screw, you will ahve to punch through the sticker with a screwdriver. Although, I suppose if you had a good enough printer, and the patience, and time, you could make and cut out a whole bunch of really tiny "Void" stickers. ;-)